George hayes



(No Model.)

' G. HAYES.

' WINDOW SLAT ADJUSTER.

Patented June 12, 1883.

Jwva 76290 7.

N PETERS. Pholo'hihognplmr. wmnn m. D. c.

UNITED STATES PATENT OF ICE...

GEORGE HAYES, OF NEXT YORK, X. Y.

WlNDOW-SLAT ADJUSTER.

SPECIFICATION forming part of Letters Patent No. 279,155, dated June 12, 1883.

Application filed April 3, 18853. (No model.)

To all whom it may concern:

Be it known that I, GEORGE HAYES, a resident of the city, county, and State of New York, have invented a new and useful Apparatus for Opening, Closing, and Self-Locking Louve'rs or Valves, of which the following is a specification.

My invention consists of an apparatus by means of which a series of louvers or valves can be readily and simultaneously opened and as readily closed, while, when opened to the or draw them shut, according to the direction of the rod or sliding bar. Alongside the sliding bar another bar is placed, connected at the top and at the bottom to the frame of the structure, the end thereof being curved or extended outward to bring its vertical portion to a suitable distance from the structure to give proper play to the movable parts of the apparatus to wit, the sliding rod-links and louvers. The upper and lower ends or curves of the stationary bar afford suitable places for the guides, through which the sliding rod plays upward and downward, as they may be attached thereto. At a suitable point upon the stationary bar a cam is pivoted. The cam is provided with a slot formed to engage with a pin upon the sliding bar in such manner that the pin may play therein as the cam is drawn upward or downward. At the outer end of the cain a ring is formed, to which may be attached a cord for moving the sameyor it may be moved by hand or pole and hook, according to the location of the louvers. The cam thus becomes a lever, its fulcrum being the pivot of the stationary bar upon which it swings, the weight being the sliding rod, connected thereto by its pin inserted into the slot of the cam, and the power being applied to the outer end of the cam by hand or otherwise. It is a lever arranged to operate a shifting weight, the weight being shifted by the cam, the curve of which is formed to give the suitable direction. The pin of the sliding bar is usually provided with a friction-roller, which, however, may be dispensed with when desirable. The location of the cam and its connection with the sliding rod may be where desired upon the stationary bar either at top, bottom, or centrally-and the stationary bar may be divided into two by dispensing with its ceir tral portion, so that its upper and lower ends would form two brackets without changing the nature of my invention, as its object is the support of the cam, also the support of the sliding .rodand its guidance. The arrangement and formation of the cam-lever is such that when it is thrown upward and backward the sliding rod is thrown up and the louvers closed, and when the cam is drawn forward and downward the sliding rod is drawn downward and the louvers opened, the pin on the sliding rod following the curve of the cam, and the curve of the cam is so shaped that when turned upward the louvers will be locked shut, and when turned downward the louvers are locked open, the position of the pin (of the sliding bar) therein forming a means of locking automatically.

instead of the cam being formed with a slot, it may be made so that its upper or outer edge may impinge upon, against, or within a corre sponding portion of the sliding rod or pin thereon, so as to operate in essentially the same manner, the principle of operation being the sameto wit, throwing a rod upward or downward by means of a cam movement, so as to open and close louvers or valves, and also self-locking in either positition. Of course the rod may be placed otherwise than verti cally, if desired, to suit position of louvers, and it can be applied to one louver or as many as necessary, the apparatus being in effect a caman'd-rod combination for opening, closing, and self-locking louvers or valves.

In the accompanying drawings, Figure 1 is a perspective view of a series of louvers provided with my device complete, the louvers being locked shut. Fig. 2 is a sectional view of the same. Dotted lines show the parts when the louvers are open. Fig. 3 is a side View, showing the equivalent construc tion and arrangement of the cam hereinbefore mentioned.

A represents the framework of the structure.

B represents the stationary bar, attached to the framework at both ends.

0 represents the sliding rod or bar running through guides at top and bottom, marked, re spectively, O and 0 These guides may be formed on separate brackets; but I prefer them on the stationary bar or portions equivalent thereto.

1) represents the links connecting the rod (1 with the l ouvers E. The sliding bar, being held vertically in parallel position to the lonvers by the guides, can only move vertically and as the links D are longer than the distance be tween the rod and the louver, the louver end F being lower than the rod end, and the louvers being hung from their upper edges, and the links secured below that point thereto, it follows that as the rod is drawn downward the thrust of the link throws the louvers open and the reverse movement closes them.

At G is shown. the cam-lever, the pivot at H forming its fulcrum, upon which it swings,

the position of the weight attached at I being 1 without iriction-roller,) as in Figs. 1; and 2,

running in the slot J of the cam G. I, attached to or forming part of the rod 0, forms the means of connecting rod 0 and cam lever G.

the cam- G, affording means for the application of power by hand, cord, or otherwise.

The pin I on the rod 0 follows the curve J of the cam G as the cam is thrown upward or downward, swinging upon its fulcrum H, and by this means the rod 0 is thrown upward and downward when required, communicating motion by links D to the louvers E, in the manner hereinbetore described.

\V hat I claim as new, and desire to secure by Letters Patent of the United States, is-

A self-lockingdevice-for one or more louvers combination with sliding rod C, provided with guides O and C and one or more links, D, all arranged to operate substai'itially as shown and described.

GEORGE HAYES.

\Vitnesses:

' GEORGE E. CONLEY,

SAM-L. M. HOPKINS.

a pin, (with or The pin At K is shown the ring at the outer end of or valves E, consisting of a cam-lever, G, in. 

